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1 import glob
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2 import gzip
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3 import json
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4 import os
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5 import os.path
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6 import shutil
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7 import subprocess
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8 import sys
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9 import tempfile
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10
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11 CHUNK_SIZE = 1024
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12
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13 def gunzip_cat_glob_path( glob_path, target_filename, delete = False ):
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14 out = open( target_filename, 'wb' )
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15 for filename in glob.glob( glob_path ):
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16 fh = gzip.open( filename, 'rb' )
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17 while True:
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18 data = fh.read( CHUNK_SIZE )
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19 if data:
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20 out.write( data )
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21 else:
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22 break
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23 fh.close()
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24 if delete:
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25 os.unlink( filename )
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26 out.close()
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27
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28 def xls_to_interval( xls_file, interval_file, header = None ):
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29 out = open( interval_file, 'wb' )
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30 if header:
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31 out.write( '#%s\n' % header )
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32 wrote_header = False
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33 #From macs readme: Coordinates in XLS is 1-based which is different with BED format.
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34 for line in open( xls_file ):
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35 #keep all existing comment lines
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36 if line.startswith( '#' ):
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37 out.write( line )
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38 elif not wrote_header:
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39 out.write( '#%s' % line )
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40 wrote_header = True
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41 else:
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42 fields = line.split( '\t' )
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43 if len( fields ) > 1:
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44 fields[1] = str( int( fields[1] ) - 1 )
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45 out.write( '\t'.join( fields ) )
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46 out.close()
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47
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48 def main():
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49 options = json.load( open( sys.argv[1] ) )
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50 output_bed = sys.argv[2]
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51 output_extra_html = sys.argv[3]
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52 output_extra_path = sys.argv[4]
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53
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54 experiment_name = '_'.join( options['experiment_name'].split() ) #save experiment name here, it will be used by macs for filenames (gzip of wig files will fail with spaces - macs doesn't properly escape them)..need to replace all whitespace, split makes this easier
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55 cmdline = "macs -t %s" % ",".join( options['input_chipseq'] )
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56 if options['input_control']:
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57 cmdline = "%s -c %s" % ( cmdline, ",".join( options['input_control'] ) )
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58 cmdline = "%s --format='%s' --name='%s' --gsize='%s' --tsize='%s' --bw='%s' --pvalue='%s' --mfold='%s' %s --lambdaset='%s' %s" % ( cmdline, options['format'], experiment_name, options['gsize'], options['tsize'], options['bw'], options['pvalue'], options['mfold'], options['nolambda'], options['lambdaset'], options['futurefdr'] )
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59 if 'wig' in options:
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60 wigextend = int( options['wig']['wigextend'] )
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61 if wigextend >= 0:
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62 wigextend = "--wigextend='%s'" % wigextend
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63 else:
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64 wigextend = ''
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65 cmdline = "%s --wig %s --space='%s'" % ( cmdline, wigextend, options['wig']['space'] )
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66 if 'nomodel' in options:
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67 cmdline = "%s --nomodel --shiftsize='%s'" % ( cmdline, options['nomodel'] )
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68 if 'diag' in options:
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69 cmdline = "%s --diag --fe-min='%s' --fe-max='%s' --fe-step='%s'" % ( cmdline, options['diag']['fe-min'], options['diag']['fe-max'], options['diag']['fe-step'] )
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70
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71 tmp_dir = tempfile.mkdtemp() #macs makes very messy output, need to contain it into a temp dir, then provide to user
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72 stderr_name = tempfile.NamedTemporaryFile().name # redirect stderr here, macs provides lots of info via stderr, make it into a report
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73 proc = subprocess.Popen( args=cmdline, shell=True, cwd=tmp_dir, stderr=open( stderr_name, 'wb' ) )
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74 proc.wait()
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75 #We don't want to set tool run to error state if only warnings or info, e.g. mfold could be decreased to improve model, but let user view macs log
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76 #Do not terminate if error code, allow dataset (e.g. log) creation and cleanup
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77 if proc.returncode:
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78 stderr_f = open( stderr_name )
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79 while True:
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80 chunk = stderr_f.read( CHUNK_SIZE )
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81 if not chunk:
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82 stderr_f.close()
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83 break
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84 sys.stderr.write( chunk )
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85
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86 #run R to create pdf from model script
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87 if os.path.exists( os.path.join( tmp_dir, "%s_model.r" % experiment_name ) ):
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88 cmdline = 'R --vanilla --slave < "%s_model.r" > "%s_model.r.log"' % ( experiment_name, experiment_name )
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89 proc = subprocess.Popen( args=cmdline, shell=True, cwd=tmp_dir )
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90 proc.wait()
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91
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92
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93 #move bed out to proper output file
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94 created_bed_name = os.path.join( tmp_dir, "%s_peaks.bed" % experiment_name )
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95 if os.path.exists( created_bed_name ):
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96 shutil.move( created_bed_name, output_bed )
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97
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98 #parse xls files to interval files as needed
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99 if options['xls_to_interval']:
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100 create_peak_xls_file = os.path.join( tmp_dir, '%s_peaks.xls' % experiment_name )
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101 if os.path.exists( create_peak_xls_file ):
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102 xls_to_interval( create_peak_xls_file, options['xls_to_interval']['peaks_file'], header = 'peaks file' )
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103 create_peak_xls_file = os.path.join( tmp_dir, '%s_negative_peaks.xls' % experiment_name )
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104 if os.path.exists( create_peak_xls_file ):
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105 xls_to_interval( create_peak_xls_file, options['xls_to_interval']['negative_peaks_file'], header = 'negative peaks file' )
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106
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107 #merge and move wig files as needed, delete gz'd files and remove emptied dirs
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108 if 'wig' in options:
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109 wig_base_dir = os.path.join( tmp_dir, "%s_MACS_wiggle" % experiment_name )
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110 if os.path.exists( wig_base_dir ):
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111 #treatment
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112 treatment_dir = os.path.join( wig_base_dir, "treat" )
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113 if os.path.exists( treatment_dir ):
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114 gunzip_cat_glob_path( os.path.join( treatment_dir, "*.wig.gz" ), options['wig']['output_treatment_file'], delete = True )
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115 os.rmdir( treatment_dir )
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116 #control
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117 if options['input_control']:
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118 control_dir = os.path.join( wig_base_dir, "control" )
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119 if os.path.exists( control_dir ):
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120 gunzip_cat_glob_path( os.path.join( control_dir, "*.wig.gz" ), options['wig']['output_control_file'], delete = True )
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121 os.rmdir( control_dir )
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122 os.rmdir( wig_base_dir )
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123
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124 #move all remaining files to extra files path of html file output to allow user download
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125 out_html = open( output_extra_html, 'wb' )
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126 out_html.write( '<html><head><title>Additional output created by MACS (%s)</title></head><body><h3>Additional Files:</h3><p><ul>\n' % experiment_name )
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127 os.mkdir( output_extra_path )
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128 for filename in sorted( os.listdir( tmp_dir ) ):
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129 shutil.move( os.path.join( tmp_dir, filename ), os.path.join( output_extra_path, filename ) )
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130 out_html.write( '<li><a href="%s">%s</a></li>\n' % ( filename, filename ) )
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131 out_html.write( '</ul></p>\n' )
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132 out_html.write( '<h3>Messages from MACS:</h3>\n<p><pre>%s</pre></p>\n' % open( stderr_name, 'rb' ).read() )
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133 out_html.write( '</body></html>\n' )
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134 out_html.close()
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135
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136 os.unlink( stderr_name )
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137 os.rmdir( tmp_dir )
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138
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139 if __name__ == "__main__": main()
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